package com.itheima.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.common.CustomException;
import com.itheima.mapper.CategoryMapper;
import com.itheima.pojo.Category;
import com.itheima.pojo.Dish;
import com.itheima.pojo.Setmeal;
import com.itheima.service.CategoryService;
import com.itheima.service.DishService;
import com.itheima.service.SetmealService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class CategoryServiceImpl extends ServiceImpl<CategoryMapper, Category> implements CategoryService {

    @Autowired
    private DishService dishService;
    @Autowired
    private SetmealService setmealService;

    @Override
    public void remove(Long id) {
        LambdaQueryWrapper<Dish> qw1 = new LambdaQueryWrapper<>();
        qw1.eq(Dish::getCategoryId,id);
        Long count = dishService.count(qw1);

        if (count >0 ){
            throw new CustomException("有关联菜品,无法删除");
        }

        LambdaQueryWrapper<Setmeal> qw2 = new LambdaQueryWrapper<>();
        qw2.eq(Setmeal::getCategoryId,id);
        long count1 = setmealService.count(qw2);
        if (count1 > 0){
            throw new CustomException("有关联套餐,无法删除");
        }

    }
}
